两摩擦零件表面硬度越低，磨损量就越大。 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24897' and id < 2124623 and id<>'2124623' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24897' and id > 2124623 and id<>'2124623' order by id asc limit 5